Using a pen with miter line join in order to make the transition between
grid cells smoother when rendering the property map by the
OE2DPropMap.Render method.

The OE2DPropMap.SetResolution lower limit has been
reduced from 2 to 1.
Using resolution 1 will result in a very smooth property grid, however
it significantly increase the size of vector images
(such as .pdf and .ps).